Grinding-machine.



A. L. PRICE.

GRINDING MACHINE.

APPLICATION FILED PBB.11.1914.

Patented Nov. 24,1914.

2 SHEETS-SHBET 1.

A. L. PRICE.

GRINDING MACHINE.

ARPLIGATION FILED FEB. 11. 1914.

1,1 18,798. Patented Nov. 24. 1914.

2 SHEETS-SHEET 2.

ALFRED L, PRICE, OF MACON. GEORGIA.

GRINDINGJVIAGHINE.

Specification 01 Letters Patent.

Patented Nov. 24, .1914.

Application filed .Februnr'y l1, lOlcL. Sieriol No. 818,101.

' To all whom may ricer n Be it known tl at l, ALFRED L. l 'uicn, ecitizen of the Unitec States, residing at Macon, in the county'of Bibband State of Georgia, have invented new and useful l nprovenlents in(irindingdiliachines, of which the following is a specification.

This invention relates to improvements in grinding machines and hasparticular nppli cation to n machine of thciclass described for grindingengine cylinders so as to re move any imperfections therefrom.

Incnrrying out the present invention, it

is my purpose to provide a. grinding nui-- chine wherein the abrcdingtool wi l travel bodily in a. circular path so ns to ellcctively grindncircular object and wherein the tool will be moved longitudinnlly sothat the entire surface of the object being ground will be acted upon.lit is also my purpose to provide a. mechinc of the class describedwherein the frictional contact between the ebrnding too] and the surfaceto he clcznicd may be varied so that noy wear on the nbrnd- .ing elementincident to the driving onerill/10H may he cmnpenseted 'lor. Fur-terinore, I aim to provide o machine of the type set forth which will becapable of nrnnunl operation. and which may be connected up with a.source or power when such is do sired and wherein the nh oding tool.will revolve planet inshion sons to travel around the surface of acylindricnli object to client the griniling thereof, and, move longitudhnnlly of such object so as to insure the complete grinding thereof. 'Afurther object of the invention is the provision of a. grinding toolwhich may be readily and conveniently conninitcd with the cylinder to beground; which will be entirely nnitomatic in operation and which may beoperated and maintained at aminimum ex 'pense.

With the above and other objects in view, the invention cons s in theconstruction, combination and or i .uureinent of partsherc innfter setforth in and telling within the scope-of the claims.

In the accompanying drawings; Figure 1 is a view in si cloclcvnti on Ofn grinding mw chino constructed in accordance with the presentinvention, the some being show n as applied to a cylinder. Fig. 2 is 21.top plan view of. the machine. Fig. 3 is a vertical sectional viewthercthrough. Fig. -l is n horizontal sectional view on the line-'.l--lof l ig. 1. Fig. 5 is a. similar view on the line of Fig. 1. Fig.6 is a view in elevation of tho wedges and connecting rod. Fig. 7 is aview in elevation of the adjust in key.

et'erring now to the drawings in detail, 1 designates a cylindricalhousing constructed of any suitable material and provided at one endwithradially extending feet 2 formed with elongated slots 3 adopted to isrcive securing bolts -lwhereby the housing may be secured to the openend of the cylin dcr to be ground. Formed on the inner wall ol thehousing 1. at the opposite ends thereof are annular flanges 55, 5, whilefitted within the flanges :3, 5, and capable of rotation therein arecylimlricnl collars 6, (3, connected to each other For simultaneousmovement througlrtl'ie medium of a web 7 partially circular in crosssection and disposed within the housing '1. Mounted eccentrically withinthe collars 6, G and arranged longitudiimlly of the housing 1 is acircular sleeve 8 'lOl'lllULl crceutricolly with n longitudinal passage9 non-circular in cross sec tion and slidnbly mounted within the possnge9 is a tube 10 having the outer wall thereof corresponding to the crosssectional contour of the passage. and the inner wall drculnr in crosssection. One end of this tube 10 is disposed within the passage 9, whilethe opposite extremity thcrcot' normally projects out of the passa c.Disposed within the tube 10 and ndaptccl for rotation tlicrein is ashaft 11 capable of sliding movement within the passage 9 and equipped,1161- jacent to the inner end of the tube 10 with n collar 12 adopted tobear upon the said end of the tube so that the latter will moveoutwnrdly f the passage in the longitudinal movement of the shaft,thereby reinforcing the shaft. Suitably fastened upon the end of theshaft 11 adjacent to the outer extremity of the sleeve is on obradingtool in the form of :1 wheel l3 ndnptcd to revolve in the rotation ofthe shaft and travel longitudinal ly of its ZtXlS in the longitudinal.H'Hlfli'lflfllll'r of the shnfti ln practice, the housing 1 is fastenedto the open end of the cylinder as illustrated in' Fig. 1, and thepmiphcry ol' the abrnding wheel 13 frictionnlly cn 'ug'cs the inner wallof the cylinder so that in the rotation of the nbradin wheel under thenotion of the shaft the inner well of the cylinder will be ground. Inorder to vary the frictional e g g m t between the inner wall of thecylinder and the periphery of the abrading wheel the sleeve 8 is rotatedwithinthe collars 6, G and, owing to the shaft 11 being eccentricallymounted within the sleeve, the periphery of the grinding wheel is movedto ard or away from the wall of the cylinder according to the directionof movement of the sleeve. For the purpose of so rotating the sleeve Iemploy, in the present instance, a gear wheel ll fixed to the outer endof the sleeve, that is the end of the sleeve remote from that adjacentto the cylinder being ground, and seated within a recess formed in theadjacentcollar 6, and a key 15 having the stem thereof formed with teeth16 and adapted to seat within a recess 17 formed in the collar 6contiguous the periphery of the gear wheel ll, the teeth 16 meshing withthe teeth of the gear 14. By means of this construction, it will be seenthat when the stem of the key is inserted within the recess 17 and theteeth 16 in mesh with the teeth of the gear 14 and the key rotated. thegear 14' and the sleeve 8 will be revolved with the effect to increaseor decrease the frictional contact between the periphery of the abradingwheel and the wall of the cylinder. according to the direction ofrotation of the key. To maintain the sleeve 8 stationary within thecollars 6, 6 subsequent to the rotation of the sleeve under the actionof the key any suitable means may be employed. In the present instance,

wedge-blocks 18. 19 are interposed bet een the inner walls of the ringsor collars 6, 6 and the adjacent extremities of the sleeve 8 and theseblocks are interconnected through the medium of a rod 1-) screw threadedat one end and equipped with a nut '20. Thus, when the nut 20 istightened the wedge blocks 8 are drawn into the collars 6, 6 with theeffect to bind against the sleeve thereby effecting a rigid connectionbetween the sleeve and the collars.

In the embodiment of my invention selected for illustrative purposes,the driving mechanism for the shaft 11 carrying the abrading wheelcomprises a shaft 21 journaled in alining bearings 22 carried by an arm23 projecting outwardly from the housing 1 and suitably connectedthereto, or formed integral therewith. This shaft 21 is arranged atright angles to the housing, and is adapted to be connected up with asource of power, while upon one end of such shaft is a bevel gear .2meshing with a similar gear 25 fast upon one end of a shaft 26 journaledin bearings carried by the housing 1,

the shaft 26 being arranged in parallelism with the housing and at rightangles to the shaft 21. The end of the shaft 26 opposite that equippedwith the bevel gear 25 is disposed in proximity to the collar 6 formedwith the aperture 17 and such end of the shaft is equipped with a gear27 meshing 27 is an arm 28' and pro ecting upwardly from such armadjacent to the periphery of the gear 27 is a stub shaft upon which isretatably mounted a pinion 29 meshing with the gear 27 and a gear 30fixed to the pinion 29. A second stub shaft extends upwardly from thearm 28' at the outer end thereof and mounted upon the last-mentionedshaft is a pinion 31 meshing with the gear 30, and a sprocket wheelfixedto the pinion 31,

while splined upon the shaft 11 is a sprocket wheel 33 and trained overthe sprocket wheels 32 and is an endless chain 34 adapted to revolve theshaft 11 in the rotation of the sprocket wheel By means of thisconstruction, it will be seen that when power is applied to the shaft21, such power will he imparted to the shaft 11 and the latter revolvewith the effect to actuate the abrading wheel within the cylinder.

ln order to slidethe shaft 11 longitudinally so that the abrading wheelwill traverse the wall of the cylinder lengthwise thereof any suitablemechanism may be em ployed. In this instance, a shaft 35 is journaled inalining bearings carried by the housing 1 and the outer end of the arm28 respectively. Fixed upon the shaft 35 is a sprocket wheel 36 whilefixed upon the shaft '21 is a sprocket wheel 37 and trained over thesprocket wheels 36 and 37 is an endless chain 38 by means of which poweris imparted to the shaft 35 in the operation of the shaft 21. Fixed uponthis shaft 35 is a pinion 39 meshing with a rack bar 40 and one end ofthe rack bar 40 is fixed to the outer end of the shaft 11 through themedium of an arm 41, while the rack bar is held in engagement with thepinion 39 through the medium of a suitable guide within which the rackbar is capable of sliding movement.

Thus, as the shaft 21 rotates to revolve the shaft 11 and actuate theabrading wheel within the cylinder, motion is transmitted to the shaft35 to actuate the rack bar 40 and so slide the shaft 11 whereby thewheel 13 110 moves longitudinally of the cylinder as well ascircumferentially thereof.

lit is to be understood, of course, that the driving mechanism forrotatln the shaft and the mechanism for sliding t e shaft are so timedrelatively to each other that the abrading wheel moves longitudinally ofits axis at proper intervals with res eat to the planetary motionthereof. In t e present instance. the shaft 11 works within an arm 42fastened to the upper end of a bracket 43 carried by the housing 1 andbearing against the sprocket wheel 33, such arm actin to hold thesprocket wheel in proper posi ion.

@ne ruin of the chain 34 is preferably 1:;0

journaled Wlifiliii said sleeve, an abrading tool connected to one endof said shaft,

means for revolving said shaft, a rack bar parallel with said shaft, aconnection o'etvveen one and of said rack bar and shaft, a pinion meshinwith said bar, means for rotating said pinion to slide said shaft Withinthe sleeve, means for rotating said collars, and driving means foroperating said last means and said last shaft simultanemisly.

10. In a grinding machine for eylinclers, a cylindrical housing, meansfor connecting said housing to the open end of the cylinder,

1,1 iaaoa collars Within said housing and spaced apart 16 rotating saidshaft, means for sliding said 20 shaft longitudinally Within saidsleeve, and means for rotating said collars.

In testimony whereof I aifix my signature in presence of two witnesses.

1 ALFRED L, PRICE. Witnesses Cams. T. MILLER, WiLnY Havana.

